<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" Content="text/html; charset=Windows-1252">
<TITLE>HHNTRACK structure</TITLE>
<style>@import url(coUA.css);</style>
<link disabled rel="stylesheet" href="htmlhelp.css">
</head>

<BODY>

<H1>HHNTRACK structure</H1>

This structure returns the file name of the current topic and a constant that specfies the user action that is about to occur, such as hiding the Navigation pane by clicking the <b>Hide</b> button on the toolbar.

<h2>Used by</h2>
<ul>
<li><a href="msg_hhn_track.htm">HHN_TRACK</a>
</li>
</ul>

<h2>HHNTRACK structure syntax</h2>
<p><PRE><code>
typedef struct tagHHNTRACK
<br>{
<br>     NMHDR       hdr;
<br>     PCSTR       pszCurUrl; 
<br>     int         idAction;
<br>     HH_WINTYPE* phhWinType;
<br>} HHNTRACK;
</PRE></code></p>

<br>
<table border=1 cellpadding=3 cellspacing=0 width=100%>
<TR>
<TH><b>Member</b>
</TH>
<TH><b>Description</b>
</TH>
</TR>

<TR>
<TD><i>hdr</i>
</TD>
<TD>Standard <b>WM_NOTIFY</b> header.
</TD>
</TR>

<TR>
<TD><i>pszCurUrl</i>
</TD>
<TD>A multi-byte, zero-terminated string that specifies the current topic (before the action is taken).
</TD>
</TR>

<TR>
<TD><a href="str_hhntrack_idaction.htm"><i>idAction</i></a>
</TD>
<TD>Specifies the action the user is about to take. This is an <a href="str_hhntrack_idaction.htm">HHACT_</a> constant.
</TD>
</TR>

<TR>
<TD><i>phhWinType</i>
</TD>
<TD>A pointer to the current <a href="str_hh_wintype.htm">HH_WINTYPE</a> structure.
</TD>
</TR>
</TABLE>


<br>
<table border="0" cellpadding="0" cellspacing="4">
<tr>
<td valign="top"><a href="ov_about_htmlhelp_structures.htm"><img src="home.gif" width=20 height=18 alt="link to overview topic" border="0"></a>
</td>
<td><a href="ov_about_htmlhelp_structures.htm">About structures</A>
</td>
</tr>
<tr>
<td>&nbsp;
</td>
</tr>
</table>




</BODY>
</HTML>
